Mercurial > sdl-ios-xcode
annotate include/SDL_thread.h @ 4446:8b03a20b320f
Much improved multi-display support for iPad.
Fixes most issues and limitations, I think.
author | Ryan C. Gordon <icculus@icculus.org> |
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date | Sun, 02 May 2010 05:08:12 -0400 |
parents | f7b03b6838cb |
children | 82f357a91d43 |
rev | line source |
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0 | 1 /* |
2 SDL - Simple DirectMedia Layer | |
3697 | 3 Copyright (C) 1997-2010 Sam Lantinga |
0 | 4 |
5 This library is free software; you can redistribute it and/or | |
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6 modify it under the terms of the GNU Lesser General Public |
0 | 7 License as published by the Free Software Foundation; either |
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8 version 2.1 of the License, or (at your option) any later version. |
0 | 9 |
10 This library is distributed in the hope that it will be useful, | |
11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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13 Lesser General Public License for more details. |
0 | 14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
0 | 18 |
19 Sam Lantinga | |
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20 slouken@libsdl.org |
0 | 21 */ |
22 | |
23 #ifndef _SDL_thread_h | |
24 #define _SDL_thread_h | |
25 | |
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26 /** |
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27 * \file SDL_thread.h |
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28 * |
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29 * Header for the SDL thread management routines. |
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30 */ |
0 | 31 |
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32 #include "SDL_stdinc.h" |
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33 #include "SDL_error.h" |
0 | 34 |
35 /* Thread synchronization primitives */ | |
36 #include "SDL_mutex.h" | |
37 | |
38 #include "begin_code.h" | |
39 /* Set up for C function definitions, even when using C++ */ | |
40 #ifdef __cplusplus | |
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41 /* *INDENT-OFF* */ |
0 | 42 extern "C" { |
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43 /* *INDENT-ON* */ |
0 | 44 #endif |
45 | |
46 /* The SDL thread structure, defined in SDL_thread.c */ | |
47 struct SDL_Thread; | |
48 typedef struct SDL_Thread SDL_Thread; | |
49 | |
3578 | 50 /* The SDL thread ID */ |
51 typedef unsigned long SDL_threadID; | |
52 | |
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53 #if defined(__WIN32__) && !defined(HAVE_LIBC) |
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54 /** |
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55 * \file SDL_thread.h |
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56 * |
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57 * We compile SDL into a DLL. This means, that it's the DLL which |
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58 * creates a new thread for the calling process with the SDL_CreateThread() |
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59 * API. There is a problem with this, that only the RTL of the SDL.DLL will |
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60 * be initialized for those threads, and not the RTL of the calling |
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61 * application! |
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62 * |
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63 * To solve this, we make a little hack here. |
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64 * |
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65 * We'll always use the caller's _beginthread() and _endthread() APIs to |
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66 * start a new thread. This way, if it's the SDL.DLL which uses this API, |
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67 * then the RTL of SDL.DLL will be used to create the new thread, and if it's |
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68 * the application, then the RTL of the application will be used. |
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69 * |
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70 * So, in short: |
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71 * Always use the _beginthread() and _endthread() of the calling runtime |
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72 * library! |
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73 */ |
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74 #define SDL_PASSED_BEGINTHREAD_ENDTHREAD |
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75 #ifndef _WIN32_WCE |
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76 #include <process.h> /* This has _beginthread() and _endthread() defined! */ |
1190 | 77 #endif |
78 | |
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79 #ifdef __GNUC__ |
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80 typedef unsigned long (__cdecl * pfnSDL_CurrentBeginThread) (void *, unsigned, |
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81 unsigned |
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82 (__stdcall * |
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83 func) (void *), |
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84 void *arg, |
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85 unsigned, |
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86 unsigned |
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87 *threadID); |
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88 typedef void (__cdecl * pfnSDL_CurrentEndThread) (unsigned code); |
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89 #else |
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90 typedef uintptr_t(__cdecl * pfnSDL_CurrentBeginThread) (void *, unsigned, |
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91 unsigned (__stdcall * |
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92 func) (void |
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93 *), |
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94 void *arg, unsigned, |
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95 unsigned *threadID); |
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96 typedef void (__cdecl * pfnSDL_CurrentEndThread) (unsigned code); |
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97 #endif |
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99 /** |
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100 * Create a thread. |
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101 */ |
2060 | 102 extern DECLSPEC SDL_Thread *SDLCALL |
103 SDL_CreateThread(int (SDLCALL * f) (void *), void *data, | |
104 pfnSDL_CurrentBeginThread pfnBeginThread, | |
105 pfnSDL_CurrentEndThread pfnEndThread); | |
1190 | 106 |
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107 #if defined(_WIN32_WCE) |
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108 |
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109 /** |
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110 * Create a thread. |
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111 */ |
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112 #define SDL_CreateThread(fn, data) SDL_CreateThread(fn, data, NULL, NULL) |
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113 |
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114 #else |
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115 |
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116 /** |
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117 * Create a thread. |
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118 */ |
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119 #define SDL_CreateThread(fn, data) SDL_CreateThread(fn, data, _beginthreadex, _endthreadex) |
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120 |
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121 #endif |
1190 | 122 #else |
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123 |
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124 /** |
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125 * Create a thread. |
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126 */ |
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127 extern DECLSPEC SDL_Thread *SDLCALL |
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128 SDL_CreateThread(int (SDLCALL * fn) (void *), void *data); |
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129 |
1190 | 130 #endif |
0 | 131 |
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132 /** |
3578 | 133 * Get the thread identifier for the current thread. |
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134 */ |
3578 | 135 extern DECLSPEC SDL_threadID SDLCALL SDL_ThreadID(void); |
0 | 136 |
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137 /** |
3578 | 138 * Get the thread identifier for the specified thread. |
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139 * |
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140 * Equivalent to SDL_ThreadID() if the specified thread is NULL. |
0 | 141 */ |
3578 | 142 extern DECLSPEC SDL_threadID SDLCALL SDL_GetThreadID(SDL_Thread * thread); |
0 | 143 |
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144 /** |
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145 * Wait for a thread to finish. |
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146 * |
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147 * The return code for the thread function is placed in the area |
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148 * pointed to by \c status, if \c status is not NULL. |
0 | 149 */ |
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150 extern DECLSPEC void SDLCALL SDL_WaitThread(SDL_Thread * thread, int *status); |
0 | 151 |
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152 /** |
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153 * \deprecated This function is here for binary compatibility with legacy apps, |
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154 * but in SDL 1.3 and later, it's a no-op. |
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155 * |
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156 * You cannot forcibly kill a thread in a safe manner on many platforms. You |
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157 * should instead find a way to alert your thread that it is time to terminate, |
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158 * and then have it gracefully exit on its own. Do not ever call this function! |
2779 | 159 */ |
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160 extern DECLSPEC void SDLCALL SDL_KillThread(SDL_Thread * thread); |
0 | 161 |
162 | |
163 /* Ends C function definitions when using C++ */ | |
164 #ifdef __cplusplus | |
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165 /* *INDENT-OFF* */ |
0 | 166 } |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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167 /* *INDENT-ON* */ |
0 | 168 #endif |
169 #include "close_code.h" | |
170 | |
171 #endif /* _SDL_thread_h */ | |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1850
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changeset
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172 |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1850
diff
changeset
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173 /* vi: set ts=4 sw=4 expandtab: */ |